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Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Be active while learning about American history with this twist on the classic running game "Capture the Flag."

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Help your child build her very own science laboratory at home for experiments and science projects. This is a quick, easy, and fun educational tool!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Construct batteries that make electricity from fruits with this fun science fair project.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Determine whether the application of Febreeze will lower the bacterial count.

This project is about after-images and what possibly affects them.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

Have your child kick off their summer vacation by making a miniature water slide!

This project examines the concentration of dissolved oxygen in water, with and without oil.